After numerous attempts, the physicists from the SOLARIS  synchrotron have transferred the electron beam through the entire length of the linear accelerator (linac). The beam has reached its end and is visible in the picture.

To reach the end of the linac, the electron beam had to travel the distance of nearly 40 metres from its source (the electron gun) and through six accelerating structures. Currently, it is the fastest electron beam in Poland. At the end of the linac, the electrons were very close to the speed of light (99.99985% of the speed of light), and the beam's energy reached 300 MeV. Generally, linacs in Poland are used chiefly in medicine; however, their beams reach the energy of a few dozen MeV. The beam in SOLARIS accelerator is aimed to reach 600 MeV, so the university physicists are facing a difficult challenge.

For now, the experiments will be put on hold until a transfer line is installed. The line will transfer the electron beam from the linac (7 metres below ground) to the synchrotron ring (4 metres below ground).